AUTOCLAVED AERATED CONCRETE BLOCK MASONRY WORK
Measurements
- Autoclave Aerated Concrete Block Masonry shall be measured in cubic metres unless otherwise specified.
- No deductions or additions shall be done and no extra payment made for the following:
- (a) Ends of dissimilar materials (that is, joists, beams, lintels, posts, girders, rafters, purlins, trusses, corbels, steps etc.); up to 0.1 m2 in section;
- (b) Opening up to 0.1 m2 in area;
- (c) Wall plates, bed plates, and bearing of slabs, chajjas and the like, where thickness does not exceed 10 cm and bearing does not extend over the full thickness of wall;
- (d) Cement concrete blocks as for hold fasts and holding down bolts;
- (e) Iron fixtures, such as wall ties, pipes upto 300 mm diameter and hold fasts for doors and windows;
- (f) Chases of section not exceeding 50 cm in girth; and
- (g) Bearing portion of drip course, bearing of moulding and cornice.
- String courses, projecting pilasters, aprons, sills and other projections shall be fully described and measured separately in running metres stating dimensions of each projection.
- Square or rectangular pillars shall be measured separately in cubic metres
- Circular pillars shall be measured separately in cubic metres as per actual dimensions.
- Autoclave Aerated Concrete Block work curved on plan shall be measured like the block work in straight walls and shall include all cutting and wastage of blocks, tapered vertical joints and use of extra mortar, if any. Block work curved on plan to a mean radius not exceeding six metres shall be measured separately and extra shall be payable over the rates for block work in straight walls. Nothing extra shall be payable if the mean radius of the block work curved in plan exceeds six metres.
- Tapered walls shall be measured net as walls and extra payment shall be allowed for making tapered surface for block work in walls.